Configuration control (option handling)
7.3 Creating the control data record
Distributed I/O system
System Manual, 02/2018, A5E31861578-AF
59
For configuration control of the ET 200AL distributed I/O system you define a control data
record 196 V2.1, which contains a slot assignment for the modules. The table below shows
the structure of a control data record with explanations of the individual elements.
Table 7- 2 Configuration control: Structure of control data record 196
4 + (number of slots x 2)
Header
1 Block ID 196
3 Subversion 1
4 Slot topology module ET-
Connection1
1
The topology module ET-
Connection 1 is always
Contains information on which module is
inserted in which slot.
The following rule determines which value
you must enter in the respective byte:
• If the module is included in the station
option, enter the slot number of the
module.
• If the module does not exist in the
station option, enter 0.
6 Slot 2 of the station master Slot assignment in the
38 Slot topology module ET-
Connection2
18
The topology module ET-
Connection2 is always
40 Slot 19 of the station mas-
Slot assignment in the
4 + ((max. slot - 1)
Maximum slot of the station
Slot assignment in the
5 + ((max. slot - 1)
Reserved
Combination of configuration control and shared device (for PROFINET)
The configuration control function in a shared device is therefore only for the I/O modules of
the IO controller to which the interface module has subscribed. I/O modules that are
assigned to no controller or a different controller behave like a station without activated
configuration control.
In the control data record change the slots only for those modules that are assigned to the
IO-Controller.
In the control data record do not move modules to slots that are assigned to a different IO
controller or no IO controller. The interface module does not check whether a control data
record 196 exists for these slots. The interface module assumes a 1-to-1 assignment for
these slots.
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